LGTM with minor question
http://gwt-code-reviews.appspot.com/1388803/diff/4001/dev/core/src/com/google/gwt/dev/resource/impl/ZipFileClassPathEntry.java File dev/core/src/com/google/gwt/dev/resource/impl/ZipFileClassPathEntry.java (right): http://gwt-code-reviews.appspot.com/1388803/diff/4001/dev/core/src/com/google/gwt/dev/resource/impl/ZipFileClassPathEntry.java#newcode72 dev/core/src/com/google/gwt/dev/resource/impl/ZipFileClassPathEntry.java:72: @SuppressWarnings("unchecked") Perhaps you don't need the 2 args for the constructor for ReferenceMap here, since you are using the values for the default constructor (might be more clear to use the defaults?). http://gwt-code-reviews.appspot.com/1388803/ -- http://groups.google.com/group/Google-Web-Toolkit-Contributors
